Bed-spring.



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W. LEWIS. BED SP ING..- APPLIdAT ION FILED 1130. 24, 1910.

Patentexi Sept. 22, 1914;.

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WITNESSES: lNVENTOR Wifliam Lewis.

ATTORNEYS WLLEWIS. BED SPRING. I APPLICATION FILED DEC 24, 19M).

Patented: 1914) 3 SH SHEET 2.

wnmssrzs: INVENTOR fi am'fi W595i 51m Lewis.

ATTORN EYS W. LEWIS. BED SPRING; AIIPLIGATION FILED 1120.24, 1910 5 I aSHEETSHEET 3.

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WITNESSES: -|NVENTOR ili am Lewis. mm v-W ATTURNEYSf Patented st.22,1914-.

marked thereon, which form part of this my pending application No.834,316, filed 'erally called two-cone springs.

, is a perspective view of the same.

I vention. Fig. 4 is a perpendicular sectional "wire bent to formacoiled spring of three the smaller convolutions toward-each other.

Y Between these two cone sections and con- Utica, in the county ofOneida and State of "F igure 1 is a side elevation of a spring emshowing one method of using my spring.

and 6 and which for convenience I will call about the same diameter asthe adjacent or inner convolution of the sections 5 and 6. At the topand bottom ends of the cyl n- UNITED STATES PATENT cr mes;

WILLIAM LEWIS, 0F UTICA, NEW YORK.

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Specification of Letters Patent. Patented Sept, 22, 1914,

Application filed December 24, 1810. Serial No. 589,130.

To all :bUltOTiL it may concern:

- Be 1t known that 1, WILLIAM Lewis, of

New York, have invented certain new and useful Improvementsin-Bed-Springs; and' I do hereby declare that the to lowing is at .full,clear, and exact description thereof, which will. enable others skilledin the art to which it appertains to make and use the same, referencebeing bad to the accompanying drawings, and to the reference-numeralsspecification.

My invention relates to coil springs adapted for use in bed springs,sofas and similar upholstered articles, reierence being had to April25,1914, and allowed May 11, 1914.

M construction is an improvement and modification of the class of suchsprings gen- The general object of my invention is to proiiide such aspring of improved form and construction which. will combine the necesresiliency for ease and strengthto resist undue compression. .With theconstruction I use to obtain these results, I also am able to makecertain novel detail construc-v tifons which will more fully appearherea ter. 1

bodymg my general construction. Fig. 2 Fig. 3 is a a ed spring embodyingone form of my inview lengthwise of the head end of a bed The coils ofmy spring are preferably formed of a single piece of suitable springsections. The two outer or end'sections 5 the 'top and bottom sectionsrespectively, are in the form of the well known two-cone spring, that ishaving the larger convolutions at the top and bottom respectively andnecting them,'-I form a central cylindrical section 7 in which theconvolutions are of relatively small diameter, preferably of the coilsof that row perpendicular sectional view, crosswise of drical sectioneach coil is intersected by upper and lower braces 8 and 9,respectively, extending lengthwise of the bed and intersecting in thesame way each coil spring in a given row. The braces are secured to thecoils by any suitable means such as a raised offset 10 in the braces 8and 9, which will fit within .the convolutions 5 and 7 respectively ofthe coil above the braces and will be held thereimby the convolutions 7and 6 respectively-below, which are formed so close to the convolutionsnext above as to' spring there are upper and lower crossbraces 11 and 12respectively which intersect at the same point as the braces 8 and 9,and thereto as by rivets 13. These cross braces serve to further securethe coils in perpendicular position. Fig. 2 represents a coil which isintersected by both lengthwise and crosswise braces while Fig. 1represents a coil that has only the lengthwise braces.

As pressure is applied to a spring of this con'structibn the -largerconvolutions will be are securely fastened compressed easily andtherefore first. As,

further pressure is applied the c'onvolutions midway of the conesections -5 and 6 will contract and the smallest convolutions which arethose in the middle or cylindrical section 7 will-be brought into playlast because they are the strongest. In this way the middle section 7acts aS- a reserve strength in the spring which prevents the springfrom'bein-g compressed its total available amount under ordinary strainand .yet does not have the undesirable and uncomfortable hardness of anentirely unyielding stop or limit. By-

forming the spring in this triple-deck form with two layers of braces, Iam able to use if desired a coil of greater total height than where onlyone brace is used. It is not necessary, however, to use a coil ofgreater height than usual, as the peculiar construction herein describedprovides a spring of of coils C would be placed at the left of the coilsA as well as at the right as now shown. What I claim as new and desireto secure by Letters Patent is l. The combination in series of coils atthe edge two sections,. the upper of which is cone shaped and taperstoward the lower and the lower of which is formed of comparatively smallconvolutions, coils in the balance of the bed of greater height andcomposed of three sections, the upper and lowerof which are cone shapedand taper toward a bed spring of e each other, the middle section ofwhich isv of smaller convolutions, braces connecting the upper junctionpoints of said three section coils and the junction points of the twosection coils and braces connecting the junction points of and bracesconnecting the lower junction points of the three section bars depressedbetween theirends to. en port the higher coils and supporting the said'two section coils at the raised ends.

2. The combination in a bed spring of a series of coils at the edge ofthe bed having two sections, the upper of which is cone series of coilsat the edge of the tiv ly small convolutions,

shaped and tapers toward the lower and the lower. of which is formed ofcompareance of the bed of greater height and composed of three sections,

the upper and lower of which are cone shaped and taper toward each otherand the middle section of which is'of smaller convolutions, bracesconnect and the lower of which is formed of comparacoils in the balofthe bed, having.

adjacent two section coils,

coils, and cross tively small convolutions, coils in the hail the upperof which is none ance of the bed of greater height, braces connectingthe junction points oi? the twosection coils and intermediate pointsupon. said higher coils and cross bars depressed. between their ends tosupport the higher coils and supporting the said two-section coils atthe raised ends.

a. The combination in a bed series of coils at the edge of the twosections, the upper of which is cone shaped and tapers toward the lowerand the lower of which is formed of compare tively small convolutions,coils in the bal ance of the bed of greater height, braces connectingthe junction points of the two section coils and intermediate pointsupon spring of e Feed having said higher coils. braces connectingadjecent intermediate points upon said higher coils and cross barsdepressed between their ends to support the higher coils end so. portingthe said two-section coils at t e raised ends. n

5'. A triple deck spring for spring beds comprising coaxial end andintermediate sections,'the end sections being coin-eel and taperedtoward the intermediate section and the intermediate section of smallerdiameter than the larger ends of the conical end sec tions, and separatefleeting brace inter locked with the junctions of the end sections withthe intermediate section.

6. A triple deck for heels comprising conical end sections andrelintirely smaller intermediate section, convohn tions at the junctionsof sections closer together than the renlaining convolu tions andseparate floating brace bars inserted between the juxtaposedoonrolutions at the junction of said sections. v

In witness whereof l have aihiied my sig nature, in the presence of twowitness, this 17th day of December 1910.

winninivi LEWlS.

A. J. SNYDER.

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